39998940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{666649}}^1$

素因数の和:666661

約数の個数: 24

約数和(自身を含む): 111997200

約数和(自身を除く): 71998260

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 666649, 1333298, 1999947, 2666596, 3333245, 3999894, 6666490, 7999788, 9999735, 13332980, 19999470, 39998940]

約数ペア:

[(1, 39998940), (2, 19999470), (3, 13332980), (4, 9999735), (5, 7999788), (6, 6666490), (10, 3999894), (12, 3333245), (15, 2666596), (20, 1999947), (30, 1333298), (60, 666649)]